EP0349375A1 - Electric fuze for a missile - Google Patents

Electric fuze for a missile Download PDF

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Publication number
EP0349375A1
EP0349375A1 EP89401706A EP89401706A EP0349375A1 EP 0349375 A1 EP0349375 A1 EP 0349375A1 EP 89401706 A EP89401706 A EP 89401706A EP 89401706 A EP89401706 A EP 89401706A EP 0349375 A1 EP0349375 A1 EP 0349375A1
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EP
European Patent Office
Prior art keywords
detonator
rocket
electric rocket
firing
priming
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP89401706A
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German (de)
French (fr)
Inventor
André Winaver
Jean Boucard
Yves De Gouville
Henri Tron
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thomson Brandt Armements SA
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Thomson Brandt Armements SA
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Publication date
Application filed by Thomson Brandt Armements SA filed Critical Thomson Brandt Armements SA
Publication of EP0349375A1 publication Critical patent/EP0349375A1/en
Withdrawn legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42CAMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C15/00Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
    • F42C15/28Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges operated by flow of fluent material, e.g. shot, fluids
    • F42C15/295Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges operated by flow of fluent material, e.g. shot, fluids operated by a turbine or a propeller; Mounting means therefor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42CAMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00Details of fuzes
    • F42C19/08Primers; Detonators
    • F42C19/09Primers or detonators containing a hollow charge

Definitions

  • the present invention relates to rockets for flying machines, in particular ground-to-ground or air-to-ground ammunition; more precisely, it relates to an electric rocket comprising power, armament, security, firing and priming elements, the constitution, positioning and operation of which make it possible to improve manufacturing, control, operational safety and security.
  • An electric rocket for flying machines such as an aviation bomb or a mortar projectile, has the function of arming the projectile within a predetermined period following the moment of release, then of generating a firing order at near or in contact with the target object.
  • Conventional rockets have different parts, generally six in number, namely: the rocket support, the power supply, the safety and arming device, the firing order generator, the firing device fire and the priming chain. These rockets require safety precautions. Indeed, the conventional use of a sensitive primary pyrotechnic charge in the priming chain, in particular at the level of the detonator, implies a sensitivity of the rocket to the effects of shocks, vibrations, thermal variations, radioelectric and ionizing radiation.
  • This sensitivity is present in all phases of use of the rocket; for example, during the manufacture of the rocket, one is obliged to take certain precautions, in particular with regard to the assembly and the controls of the elements of the priming chain, which constrain the mass production of this rocket .
  • the use of a sensitive primary pyrotechnic charge in a priming chain obliges the manufacturer to determine and carry out an architecture of the rocket comprising elements of protection reinforced against accidental environments such as, for example, fire in the hold or the shock resulting from "double feeding". These reinforced protections seem difficult to develop, and increase the cost of the rocket.
  • the main object of the invention is to use a priming chain without a sensitive primary pyrotechnic composition eliminating the difficulties mentioned above.
  • the object of the invention is an electric rocket characterized in that it comprises a support inside which is disposed a firing order generator connected to firing means triggering a priming chain comprising only secondary pyrotechnic compositions and the detonator of which is with a sprayed layer; the generator and the ignition means being supplied and made active by supply means controlled by security and arming means.
  • the electric rocket 1 is made up of different modules:
  • a support 1 represented by hatched lines; this support 1 is composed of several parts among which there are sealing means 2 protecting the priming chain, consisting of elements 3, 4 and 5, against the effects of a possible double supply and a cover 6 of the reinforcing relay 5 which protects the priming chain for the same reasons as those mentioned above. Priming of the reinforcing relay 5 through the cover 6 is possible thanks, for example, to the particular architecture, for example, in the form of a hollow charge, of the bottom of the detonator 4.
  • the supply means 7 is a regulated supply of the proximetric firing order generator 10
  • the supply means 9 is a low voltage / high voltage conversion device for the ignition means.
  • the supply means 7 is a turbo-alternator making it possible to test, by its operation, one of the arming conditions; this turbo-alternator 7 is provided with a turbine 16 which is driven by the admitted air current, after the rocket's hair has been disheveled, in an axial channel 17 thereof.
  • the supply means have been arranged so that, before complete arming, there is no potential energy on board the rocket capable of supplying the firing means composed of the elements 11, 12, 13 and 15 which will be described later and that the supply of the firing means is only possible by the security and arming means 18, 19, 20, 21 and 22 and this, due to a full and normal implementation of the ammunition.
  • the rocket includes a firing order generator 10; this generator can be, for example, a grazing impact detector, a proximeter, a chronometer, a magnetometer.
  • a firing order generator 10 this generator can be, for example, a grazing impact detector, a proximeter, a chronometer, a magnetometer.
  • the list of different generators that can be used to serve as a firing order generator is not exhaustive. Indeed, it may be, for the needs of the cause, that it is necessary to make combinations of different generators to obtain a firing order generator with desired characteristics.
  • the firing means constituting an important module of the rocket, they consist of a normalizer 11 which receives the order emitted by the firing generator 10, of a discharge switch 12 firing energy charged in the tank capacity 13; this switch 12 can be, for example, with a pyrotechnic motor by acting by piercing the solid dielectric separating from the main electrodes of the discharge circuit, the choice of switch 12 being a function of the operating time relative to the ignition generator 10 used.
  • the tank capacity 13 installed, for example, flat inside the rocket is an element making up the firing charge; it is the same for the selector switch 14 which defines the operating mode of the rocket; this switching selector 14 makes it possible to take, for example, two different options: - either the "proximity” option - either the "impact” option.
  • modules 12 and 15 are not both used.
  • the effect of the discharge switch 12 is replaced by the axis 15 of the turbo-generator 7, this axis being in connection with the turbine 16 of the turbo-alternator 7.
  • the firing means must also be adapted to the detonator represented by elements 3 and 4 and described later, in particular, as regards the power required by the excitation of the detonator.
  • the priming chain comprises a detonator represented by elements 3 and 4; this detonator (3 and 4), comprising sensitive primary pyrotechnic charges, in the conventional case, is, in our case, composed of exclusively secondary pyrotechnic charges to improve and simplify, by avoiding any misalignment of the priming chain, the systems security developed for the cause; these secondary pyrotechnic charges are typically the explosive charges permitted by the list cited in the Military Standard 1316 C of 3/1/1984, paragraphs 431 et seq.
  • the detonator 3 and 4 is, for example, a projected layer detonator.
  • this detonator 3 and 4 has been defined to make it possible to strengthen immunity to the effect of the double supply, this is why, sealing means 2 and a cover 6 have been so arranged in this rocket.
  • the shape of the detonator 3 and 4 has been produced so that the bottom of the detonator 4 has a particular architecture, for example, in the form of a hollow charge, allowing the priming of the next element of the priming chain, namely the reinforcing relay 5, through the cover 6.
  • the reinforcing relay 5 transmits the detonation, for example, at the charge of a projectile the internal structure of this charge is independent of the previously established choices, it can be, for example , explosive or incendiary.
  • this module The role of this module is, on the other hand, to arm the rocket by removing security, that is to say say by putting the firing means into operation thanks to its power supply; to achieve this, use is made, for example, of an operating controller 20, which, by means of a gear 21, is in relation to the axis 15 of the turbo-alternator 7 allowing, when the relays 22 establish the connection electric 24 between the low-voltage-high-voltage converter 9 and the turbo-alternator 7, the supply of the ignition means.
  • the accelerometer 19 is implemented, for example, by a transverse latch 18 which tests the suppression storage security, that is to say the rocket's disheveling.
  • the rocket is equipped with a cap preventing the various modules from starting up.
  • the cap of the rocket is removed which allows, firstly, the free circulation of air inside the rocket causing, when the rocket is animated with a movement, the setting in operation of the turbo-alternator 7 via the turbine 16 and which, in a second step, allows the operation of the accelerometer 19 thanks to the transverse latch 18 which releases it.
  • the turbine 16 of the turbo-alternator allows, on the one hand, to store energy inside the reservoir capacity 13 and, on the other hand, via the axis 15, it causes a gear 21 which transmits to the element 20 a downward translational movement, forcing the relay 22 to come into contact with the element 25 and this, provided that all the phases of launch and flight have gone well.
  • the accelerometer 19 tests the axial acceleration in space 23 until a desired value is obtained.
  • the other relay 22 comes to bear on the element 26 and the electrical connection 24, between the turbo-generator 7 and the converter 9 Low-voltage-High-voltage, is produced.
  • One manipulation, not to be forgotten before the use phase, is the positioning of the switching selector 14 which determines the operating mode of the rocket.
  • either element 12 or element 15 is used to activate the ignition energy located in the reservoir capacity 13; this energy triggers the detonator 3 and 4 which, thanks to a particular architecture, initiates a reinforcing relay 5 which transmits the detonation to the charge in presence.
  • a rocket according to the invention, is suitable for mortar projectiles launched by smooth or striped tubes and it is also possible to use this type of rocket while continuing not to use primary pyrotechnic composition, for example, in the lighting of projectiles.

Abstract

The invention relates to an electrical fuse for missiles. This fuse comprises supply means 7, 8 and 9, ignition means 11, 12, 13 and 15, a priming chain 3, 4 and 5 and safety and arming means 18, 19, 20, 21 and 22. The replacement in the priming chain of elements of purely sensitive primary pyrotechnic compositions by elements of secondary pyrotechnic compositions provides a new arrangement of the various modules constituting the fuse and thus makes it possible to simplify the construction and production of the fuse, whilst at the same time increasing the operating safety and reliability. <IMAGE>

Description

La présente invention se rapporte aux fusées pour engins volants notamment aux munitions sol-sol ou air-sol ; elle concerne, plus précisément une fusée électrique comprenant des éléments d'alimentation, d'armement, de sécurité, de mise à feu et d'amorçage dont la constitution, le positionnement ainsi que le fonctionnement permettent d'améliorer la fabrication, le contrôle, la sûreté de fonctionnement et la sécurité.The present invention relates to rockets for flying machines, in particular ground-to-ground or air-to-ground ammunition; more precisely, it relates to an electric rocket comprising power, armament, security, firing and priming elements, the constitution, positioning and operation of which make it possible to improve manufacturing, control, operational safety and security.

Une fusée électrique pour engins volants, telle qu'une bombe d'aviation ou un projectile de mortier, a pour fonction d'armer le projectile dans un délai prédéterminé suivant l'instant de largage, puis de générer un ordre de mise à feu à proximité ou au contact de l'objet visé. Les fusées conventionnelles comportent différentes parties, généralement au nombre de six, à savoir : le support de la fusée, l'alimentation, le dispositif de sécurité et d'armement, le générateur d'ordre de mise à feu, le dispositif de mise à feu et la chaîne d'amorçage. Ces fusées exigent des précautions de sécurité. En effet, l'utilisation conventionnelle d'une charge pyrotechnique primaire sensible dans la chaîne d'amorçage, notamment au niveau du détonateur, implique une sensibilité de la fusée aux effets des chocs, vibrations, variations thermiques, rayonnements radioélectriques et ionisants. Cette sensibilité est présente dans toutes les phases d'emploi de la fusée ; par exemple, au cours de la fabrication de la fusée, on est obligé de prendre certaines précautions, notamment en ce qui concerne l'assemblage et les contrôles des éléments de la chaîne d'amorçage, qui contraignent la production en grandes séries de cette fusée. De plus, l'utilisation d'une charge pyrotechnique primaire sensible dans une chaîne d'amorçage, oblige le constructeur à déterminer et à réaliser une architecture de la fusée comportant des éléments de protections renforcées contre les environnements accidentels tels que, par exemple, l'incendie en soute où le choc résultant de "la double alimentation". Ces protections renforcées semblent difficiles à élaborer, et augmentent le coût de la fusée.An electric rocket for flying machines, such as an aviation bomb or a mortar projectile, has the function of arming the projectile within a predetermined period following the moment of release, then of generating a firing order at near or in contact with the target object. Conventional rockets have different parts, generally six in number, namely: the rocket support, the power supply, the safety and arming device, the firing order generator, the firing device fire and the priming chain. These rockets require safety precautions. Indeed, the conventional use of a sensitive primary pyrotechnic charge in the priming chain, in particular at the level of the detonator, implies a sensitivity of the rocket to the effects of shocks, vibrations, thermal variations, radioelectric and ionizing radiation. This sensitivity is present in all phases of use of the rocket; for example, during the manufacture of the rocket, one is obliged to take certain precautions, in particular with regard to the assembly and the controls of the elements of the priming chain, which constrain the mass production of this rocket . In addition, the use of a sensitive primary pyrotechnic charge in a priming chain, obliges the manufacturer to determine and carry out an architecture of the rocket comprising elements of protection reinforced against accidental environments such as, for example, fire in the hold or the shock resulting from "double feeding". These reinforced protections seem difficult to develop, and increase the cost of the rocket.

Le but principal de l'invention est d'utiliser une chaîne d'amorçage sans composition pyrotechnique primaire sensible éliminant les difficultés énoncées précédemment.The main object of the invention is to use a priming chain without a sensitive primary pyrotechnic composition eliminating the difficulties mentioned above.

L'objet de l'invention est une fusée électrique caractérisée en ce qu'elle comporte un support à l'intérieur duquel est disposé un générateur d'ordre de mise à feu relié à des moyens de mise à feu déclenchant une chaîne d'amorçage ne comportant que des compositions pyrotechniques secondaire et dont le détonateur est à couche projetée ; le générateur et les moyens de mise à feu étant alimentés et rendus actifs par des moyens d'alimentation commandés par des moyens de sécurité et d'armement.The object of the invention is an electric rocket characterized in that it comprises a support inside which is disposed a firing order generator connected to firing means triggering a priming chain comprising only secondary pyrotechnic compositions and the detonator of which is with a sprayed layer; the generator and the ignition means being supplied and made active by supply means controlled by security and arming means.

L'invention sera mieux comprise et d'autres détails apparaîtront à l'aide de la description ci-dessus et de la figure l'accompagnant, celle-ci représentant un exemple de réalisation d'une fusée électrique selon l'invention.The invention will be better understood and other details will appear with the aid of the description above and the accompanying figure, the latter representing an embodiment of an electric rocket according to the invention.

La fusée électrique 1 est constituée de différents modules :The electric rocket 1 is made up of different modules:

. Tout d'abord, pour disposer les différents éléments contenus à l'intérieur de la fusée, il est nécessaire d'utiliser un support 1 représenté par des lignes hachurées ; ce support 1 est composé de plusieurs parties parmi lesquelles on trouve des moyens d'étanchéité 2 protégeant la chaîne d'amorçage, constituée des éléments 3,4 et 5, contre les effets d'une possible double alimentation et un couvercle 6 du relais renforçateur 5 qui protège la chaîne d'amorçage pour les mêmes raisons que celles évoquées précédemment. L'amorçage du relais renforçateur 5 à travers le couvercle 6 est possible grâce, par exemple, à l'architecture particulière, par exemple, en forme de charge creuse, du fond du détonateur 4.. First of all, to arrange the various elements contained inside the rocket, it is necessary to use a support 1 represented by hatched lines; this support 1 is composed of several parts among which there are sealing means 2 protecting the priming chain, consisting of elements 3, 4 and 5, against the effects of a possible double supply and a cover 6 of the reinforcing relay 5 which protects the priming chain for the same reasons as those mentioned above. Priming of the reinforcing relay 5 through the cover 6 is possible thanks, for example, to the particular architecture, for example, in the form of a hollow charge, of the bottom of the detonator 4.

. Ensuite, il existe les moyens d'alimentation électrique 7,8 et 9 permettant le fonctionnement des générateurs d'ordre de mise à feu 10 et des moyens de mise à feu représentés par des ronds sur la figure et constitués d'un normalisateur 11, d'un commutateur de décharge 12, d'une capacité réservoir 13, d'un sélecteur de commutation 14 et d'un axe 15. Le moyen d'alimentation 8 est une alimentation régulée du générateur d'ordre de mise à feu proximétrique 10. Le moyen d'alimentation 9 est un dispositif de conversion basse tension/haute tension pour les moyens de mise à feu. Le moyen d'alimentation 7 est un turbo-alternateur permettant de tester par son fonctionnement, une des conditions d'armement ; ce turbo-alternateur 7 est muni d'une turbine 16 qui est entraînée par le courant d'air admis, après le décoiffement de la fusée, dans un canal axial 17 de celle-ci. L'agencement des moyens d'alimentation a été réalisé, de manière que, avant armement complet, il n'y ait pas d'énergie potentielle à bord de la fusée capable d'alimenter les moyens de mise à feu composés des éléments 11, 12, 13 et 15 qui seront décrit ultérieurement et que l'alimentation des moyens de mise à feu ne soit possible que par les moyens de sécurité et d'armement 18,19, 20,21 et 22 et ce, du fait d'une mise en oeuvre complète et normale de la munition.. Then, there are the electrical supply means 7, 8 and 9 allowing the operation of the firing order generators 10 and the firing means represented by circles in the figure and consisting of a normalizer 11, a discharge switch 12, a reservoir capacity 13, a switching selector 14 and an axis 15. The supply means 8 is a regulated supply of the proximetric firing order generator 10 The supply means 9 is a low voltage / high voltage conversion device for the ignition means. The supply means 7 is a turbo-alternator making it possible to test, by its operation, one of the arming conditions; this turbo-alternator 7 is provided with a turbine 16 which is driven by the admitted air current, after the rocket's hair has been disheveled, in an axial channel 17 thereof. The supply means have been arranged so that, before complete arming, there is no potential energy on board the rocket capable of supplying the firing means composed of the elements 11, 12, 13 and 15 which will be described later and that the supply of the firing means is only possible by the security and arming means 18, 19, 20, 21 and 22 and this, due to a full and normal implementation of the ammunition.

. D'autre part la fusée comporte un générateur d'ordre de mise à feu 10 ; ce générateur peut être, par exemple, un détecteur d'impact rasant, un proximètre, un chronomètre, un magnétomètre. La liste des différents générateurs que l'on peut utiliser pour servir de générateur d'ordre de mise à feu n'est pas limitative. En effet, il se peut, pour les besoins de la cause, que l'on soit amené à effectuer des combinaisons de différents générateurs pour obtenir un générateur d'ordre de mise à feu avec des caractéristiques recherchées.. On the other hand, the rocket includes a firing order generator 10; this generator can be, for example, a grazing impact detector, a proximeter, a chronometer, a magnetometer. The list of different generators that can be used to serve as a firing order generator is not exhaustive. Indeed, it may be, for the needs of the cause, that it is necessary to make combinations of different generators to obtain a firing order generator with desired characteristics.

. En ce qui concerne les moyens de mise à feu constituant un module important de la fusée, ils se composent d'une normalisateur 11 qui réceptionne l'ordre émis par le générateur de mise à feu 10, d'un commutateur de décharge 12 de l'énergie de mise à feu chargée dans la capacité réservoir 13 ; ce commutateur 12 peut être, par exemple, à moteur pyrotechnique en agissant par percement du diélectrique solide séparant des électrodes principales du circuit de décharge, le choix du commutateur 12 étant fonction du délai de fonctionnement par rapport au générateur de mise à feu 10 utilisé. La capacité réservoir 13 installée, par exemple, à plat à l'intérieur de la fusée est un élément composant la charge de la mise à feu ; il en est de même pour le sélecteur de commutateur 14 qui définit le mode de fonctionnement de la fusée ; ce sélecteur de commutation 14 permet de prendre, par exemple, deux options différentes :
- soit l'option "proximité"
- soit l'option "impact".
. As regards the firing means constituting an important module of the rocket, they consist of a normalizer 11 which receives the order emitted by the firing generator 10, of a discharge switch 12 firing energy charged in the tank capacity 13; this switch 12 can be, for example, with a pyrotechnic motor by acting by piercing the solid dielectric separating from the main electrodes of the discharge circuit, the choice of switch 12 being a function of the operating time relative to the ignition generator 10 used. The tank capacity 13 installed, for example, flat inside the rocket is an element making up the firing charge; it is the same for the selector switch 14 which defines the operating mode of the rocket; this switching selector 14 makes it possible to take, for example, two different options:
- either the "proximity" option
- either the "impact" option.

Dans un cas comme dans l'autre les modules 12 et 15 ne sont pas tous les deux utilisés. Pour une option choisie, par exemple, l'option "impact", l'effet du commutateur de décharge 12 est remplacé par l'axe 15, du turbo-alternateur 7, cet axe étant en liaison avec la turbine 16 du turbo- alternateur 7. Les moyens de mise à feu doivent être également adaptés au détonateur représenté par les éléments 3 et 4 et décrit ultérieurement, notamment, en ce qui concerne la puissance qu'exige l'excitation du détonateur.In either case, modules 12 and 15 are not both used. For an option chosen, for example, the "impact" option, the effect of the discharge switch 12 is replaced by the axis 15 of the turbo-generator 7, this axis being in connection with the turbine 16 of the turbo-alternator 7. The firing means must also be adapted to the detonator represented by elements 3 and 4 and described later, in particular, as regards the power required by the excitation of the detonator.

. L'élément principal de l'invention étant les constituants pyrotechniques de la chaîne d'amorçage représentés par les éléments 3,4 et 5, nous nous proposons de décrire la structure de celle-ci. La chaîne d'amorçage comporte un détonateur représenté par les éléments 3 et 4 ; ce détonateur (3 et 4), comportant des charges pyrotechniques primaires sensibles, dans le cas conventionnel, est, dans notre cas, composé de charges pyrotechniques exclusivement secondaires pour améliorer et simplifier, en évitant tout désalignement de la chaîne d'amorçage, les systèmes de sécurité élaborés pour la cause ; ces charges pyrotechniques secondaires sont typiquement les charges explosives permis par la liste citée dans le Military Standard 1316 C du 3/1/1984, paragraphes 431 et suivants. Le détonateur 3 et 4 est, par exemple, un détonateur à couche projetée. La disposition de ce détonateur 3 et 4 à l'intérieur de la fusée, a été définie pour permettre de renforcer l'immunité à l'effet de la double alimentation, c'est pourquoi, des moyens d'étanchéité 2 et un couvercle 6 ont été disposés de la sorte dans cette fusée. La forme du détonateur 3 et 4 a été réalisée de manière à ce que le fond du détonateur 4 ait une architecture particulière, par exemple, en forme de charge creuse, permettant l'amorçage de l'élément suivant de la chaîne d'amorçage, à savoir le relais renforçateur 5, à travers le couvercle 6. Le relais renforçateur 5 transmet la détonation, par exemple, à la charge d'un projectile la structure interne de cette charge est indépendante des choix préalablement établis, elle peut être, par exemple, explosive ou incendiaire.. The main element of the invention being the pyrotechnic constituents of the priming chain represented by elements 3, 4 and 5, we propose to describe the structure thereof. The priming chain comprises a detonator represented by elements 3 and 4; this detonator (3 and 4), comprising sensitive primary pyrotechnic charges, in the conventional case, is, in our case, composed of exclusively secondary pyrotechnic charges to improve and simplify, by avoiding any misalignment of the priming chain, the systems security developed for the cause; these secondary pyrotechnic charges are typically the explosive charges permitted by the list cited in the Military Standard 1316 C of 3/1/1984, paragraphs 431 et seq. The detonator 3 and 4 is, for example, a projected layer detonator. The arrangement of this detonator 3 and 4 inside the rocket, has been defined to make it possible to strengthen immunity to the effect of the double supply, this is why, sealing means 2 and a cover 6 have been so arranged in this rocket. The shape of the detonator 3 and 4 has been produced so that the bottom of the detonator 4 has a particular architecture, for example, in the form of a hollow charge, allowing the priming of the next element of the priming chain, namely the reinforcing relay 5, through the cover 6. The reinforcing relay 5 transmits the detonation, for example, at the charge of a projectile the internal structure of this charge is independent of the previously established choices, it can be, for example , explosive or incendiary.

. Comme déjà mentionné dans un paragraphe précédent, nous allons évoquer les moyens de sécurité et d'armement 18,19,20,21 et 22 figurant à l'intérieur de la fusée. Le rôle de ce module est, d'une part d'assurer que l'armement de la fusée n'est pas possible tant que le module ne constate pas lui-même que la mise en oeuvre de la munition est effectuée complètement et normalement. Pour cela on utilise, par exemple, un accéléromètre 19 qui teste l'accélération axiale dans l'espace 23. Le rôle de ce module est, d'autre part, d'armer la fusée en supprimant la sécurité c'est-à-dire en mettant les moyens de mise à feu en fonctionnement grâce à son alimentation ; pour réaliser cela, on utilise, par exemple, un contrôleur de fonctionnement 20, qui, par l'intermédiaire d'un engrenage 21, est en relation avec l'axe 15 du turbo-alternateur 7 permettant, lorsque les relais 22 établissent la liaison électrique 24 entre le convertisseur basse tension-haute tension 9 et le turbo-alternateur 7, l'alimentation des moyens de mise à feu. L'accéléromètre 19 est mis en oeuvre, par exemple, par un verrou transversal 18 qui teste la suppression de la sécurité de stockage c'est-à-dire le décoiffement de la fusée.. As already mentioned in a previous paragraph, we will discuss the security and arming means 18,19,20,21 and 22 appearing inside the rocket. The role of this module is, on the one hand to ensure that the arming of the rocket is not possible as long as the module does not itself observe that the implementation of the ammunition is carried out completely and normally. For this, an accelerometer 19 is used, for example, which tests the axial acceleration in space 23. The role of this module is, on the other hand, to arm the rocket by removing security, that is to say say by putting the firing means into operation thanks to its power supply; to achieve this, use is made, for example, of an operating controller 20, which, by means of a gear 21, is in relation to the axis 15 of the turbo-alternator 7 allowing, when the relays 22 establish the connection electric 24 between the low-voltage-high-voltage converter 9 and the turbo-alternator 7, the supply of the ignition means. The accelerometer 19 is implemented, for example, by a transverse latch 18 which tests the suppression storage security, that is to say the rocket's disheveling.

Afin de mieux comprendre l'articulation des différents modules à l'intérieur de la fusée, une explication du fonctionnement global de la fusée va être donnée. Pendant toutes les opérations de manipulation, par exemple, le stockage ou le transport, la fusée est équipée d'une coiffe évitant aux différents modules de se mettre en fonctionnement. Avant la phase d'utilisation, on retire la coiffe de la fusée qui autorise, dans un premier temps, la libre circulation de l'air à l'intérieur de la fusée provoquant, lorsque la fusée est animée d'un mouvement, la mise en marche du turbo-alternateur 7 par l'intermédiaire de la turbine 16 et qui, dans un deuxième temps, permet le fonctionnement de l'accéléromètre 19 grâce au verrou transversal 18 qui la libère. La turbine 16 du turbo-alternateur permet, d'une part, d'emmagasiner de l'énergie à l'intérieur de la capacité réservoir 13 et, d'autre part, par l'intermédiaire de l'axe 15, elle entraîne un engrenage 21 qui transmet à l'élément 20 un mouvement de translation vers le bas, obligeant le relais 22 à venir au contact de l'élément 25 et ceci, à condition que toutes les phases du lancement et du vol se soient bien déroulées. Pendant ce temps, l'accéléromètre 19 teste l'accélération axiale dans l'espace 23 jusqu'à ce que l'on obtienne une valeur désirée. A cet instant, l'autre relais 22 vient en appui sur l'élément 26 et la liaison électrique 24, entre le turbo-alternateur 7 et le convertisseur 9 Basse-tension-Haute-tension, est réalisée. Une manipulation, à ne pas oublier avant la phase d'utilisation, est le positionnement du sélecteur de commutation 14 qui détermine le mode de fonctionnement de la fusée. Grâce à ce sélecteur 14, on utilise, soit l'élément 12 ou soit l'élément 15, pour activer l'énergie de mise à feu située dans la capacité réservoir 13 ; cette énergie déclenche le détonateur 3 et 4 qui, grâce à une architecture particulière, amorce un relais renforçateur 5 lequel transmet la détonation à la charge en présence. Une telle fusée, selon l'invention, convient pour des projectiles de mortiers lancés par des tubes lisses ou rayés et il est aussi envisageable d'utiliser ce type de fusée en continuant à ne pas se servir de composition pyrotechnique primaire, par exemple, dans l'allumage de projectiles éclairants.In order to better understand the articulation of the different modules inside the rocket, an explanation of the overall functioning of the rocket will be given. During all handling operations, for example, storage or transport, the rocket is equipped with a cap preventing the various modules from starting up. Before the use phase, the cap of the rocket is removed which allows, firstly, the free circulation of air inside the rocket causing, when the rocket is animated with a movement, the setting in operation of the turbo-alternator 7 via the turbine 16 and which, in a second step, allows the operation of the accelerometer 19 thanks to the transverse latch 18 which releases it. The turbine 16 of the turbo-alternator allows, on the one hand, to store energy inside the reservoir capacity 13 and, on the other hand, via the axis 15, it causes a gear 21 which transmits to the element 20 a downward translational movement, forcing the relay 22 to come into contact with the element 25 and this, provided that all the phases of launch and flight have gone well. During this time, the accelerometer 19 tests the axial acceleration in space 23 until a desired value is obtained. At this instant, the other relay 22 comes to bear on the element 26 and the electrical connection 24, between the turbo-generator 7 and the converter 9 Low-voltage-High-voltage, is produced. One manipulation, not to be forgotten before the use phase, is the positioning of the switching selector 14 which determines the operating mode of the rocket. Thanks to this selector 14, either element 12 or element 15 is used to activate the ignition energy located in the reservoir capacity 13; this energy triggers the detonator 3 and 4 which, thanks to a particular architecture, initiates a reinforcing relay 5 which transmits the detonation to the charge in presence. Such a rocket, according to the invention, is suitable for mortar projectiles launched by smooth or striped tubes and it is also possible to use this type of rocket while continuing not to use primary pyrotechnic composition, for example, in the lighting of projectiles.

Claims (8)

1. Fusée électrique, caractérisée en ce qu'elle comporte un support (1) à l'intérieur duquel est disposé un générateur d'ordre de mise à feu (10) relié à des moyens de mise à feu (11, 12, 13 et 15) déclenchant une chaîne d'amorçage (3, 4, 5) ne comportant que des compositions pyrotechniques secondaire et dont le détonateur (3, 4) est à couche projetée ; le générateur (10) et les moyens de mise à feu (11, 12, 13 et 15) étant alimentés et rendus actifs par des moyens d'alimentation (7, 8, 9) commandés par des moyens de sécurité et d'armement.1. Electric rocket, characterized in that it comprises a support (1) inside which is disposed a firing order generator (10) connected to firing means (11, 12, 13 and 15) triggering a priming chain (3, 4, 5) comprising only secondary pyrotechnic compositions and the detonator (3, 4) of which is with a sprayed layer; the generator (10) and the ignition means (11, 12, 13 and 15) being supplied and made active by supply means (7, 8, 9) controlled by security and arming means. 2. Fusée électrique selon la revendication 1, caracté­risée en ce que les éléments (3, 4, 5) de la chaîne d'amorçage sont alignés.2. Electric rocket according to claim 1, characterized in that the elements (3, 4, 5) of the priming chain are aligned. 3. Fusée électrique selon la revendication 1, caracté­risée en ce qu'une commutation d'une énergie de mise à feu dans le détonateur est réalisée par poinçonnement du diélectrique solide séparant des électrodes principales du circuit de décharge.3. Electric rocket according to claim 1, characterized in that a switching of firing energy in the detonator is carried out by punching the solid dielectric separating the main electrodes of the discharge circuit. 4. Fusée électrique selon la revendication 1, caracté ­risée en ce que le détonateur (4) de la chaîne d'amorçage a une forme de charge creuse.4. Electric rocket according to claim 1, characterized in that the detonator (4) of the priming chain has a form of hollow charge. 5. Fusée électrique selon les revendications précé­dentes, caractérisée en ce que des moyens d'étanchéité (2, 6) constituent des séparations matérielles et solides entre chacun des éléments (3, 4, 5) de la chaîne d'amorçage ; ces séparations ainsi réalisées assurant que :
5. Electric rocket according to the preceding claims, characterized in that sealing means (2, 6) constitute material and solid separations between each of the elements (3, 4, 5) of the priming chain; these separations thus carried out ensuring that:
- en fonctionnement normal, la détonation engendrée par le détonateur (4) soit correctement transmise jusqu 'au relais renforçateur (5) (celui-ci compris) ;
- in normal operation, the detonation generated by the detonator (4) is correctly transmitted to the reinforcing relay (5) (including this one);
- en environnement anormal, telle que la double alimentation, les gaz chauds, sous haute pression régnant dans le tube lanceur, ne puissent pas provoquer un amorçage complet et correctement transmis ni, par conséquent, le fonctionnement normal correspondant.- in an abnormal environment, such as the double supply, the hot gases, under high pressure prevailing in the launcher tube, cannot cause complete and correctly transmitted ignition nor, consequently, the corresponding normal operation. 6.Projectile, caractérisé en ce qu'il comprend une fusée électrique selon l'une quelconque des revendications précédentes.6.Projectile, characterized in that it comprises an electric rocket according to any one of the preceding claims.
EP89401706A 1988-06-28 1989-06-16 Electric fuze for a missile Withdrawn EP0349375A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8808645A FR2633384A1 (en) 1988-06-28 1988-06-28 ELECTRIC ROCKET FOR FLYING MACHINES
FR8808645 1988-06-28

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EP0349375A1 true EP0349375A1 (en) 1990-01-03

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000031497A1 (en) * 1998-11-26 2000-06-02 Junghans Feinwerktechnik Gmbh & Co. Kg Mortar fuze with a rotatable fan
FR2926631A1 (en) * 2008-01-18 2009-07-24 Livbag Soc Par Actions Simplif Electro-pyrotechnic igniter for e.g. airbag of automobile, has case containing leadless secondary charges with different apparent densities, where one of charges presenting high apparent density is placed in contact with base of case

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2627160A (en) * 1947-04-01 1953-02-03 Macdonald Gilmour Craig Rocket igniter
US2764092A (en) * 1946-03-08 1956-09-25 Mark F Massey Impact fuze for projectiles
US3045524A (en) * 1958-06-23 1962-07-24 Richard H F Stresau Booster cup and method of making same
AU417767B2 (en) * 1966-09-12 1971-10-10 Lockheed Aircraft Corporation Exploding bridge wire initiator
FR2114099A5 (en) * 1970-11-16 1972-06-30 France Etat
FR2219705A5 (en) * 1973-02-28 1974-09-20 Kongsberg Vapenfab As
US4027593A (en) * 1976-02-12 1977-06-07 The United States Of America As Represented By The Secretary Of The Army Multi-directional system for electrical bomb fuzes
US4034674A (en) * 1975-12-24 1977-07-12 Motorola, Inc. Compact electrical fuze

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2764092A (en) * 1946-03-08 1956-09-25 Mark F Massey Impact fuze for projectiles
US2627160A (en) * 1947-04-01 1953-02-03 Macdonald Gilmour Craig Rocket igniter
US3045524A (en) * 1958-06-23 1962-07-24 Richard H F Stresau Booster cup and method of making same
AU417767B2 (en) * 1966-09-12 1971-10-10 Lockheed Aircraft Corporation Exploding bridge wire initiator
FR2114099A5 (en) * 1970-11-16 1972-06-30 France Etat
FR2219705A5 (en) * 1973-02-28 1974-09-20 Kongsberg Vapenfab As
US4034674A (en) * 1975-12-24 1977-07-12 Motorola, Inc. Compact electrical fuze
US4027593A (en) * 1976-02-12 1977-06-07 The United States Of America As Represented By The Secretary Of The Army Multi-directional system for electrical bomb fuzes

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000031497A1 (en) * 1998-11-26 2000-06-02 Junghans Feinwerktechnik Gmbh & Co. Kg Mortar fuze with a rotatable fan
US6481354B1 (en) 1998-11-26 2002-11-19 Junghan Feinwektechnik Gmbh & Co. Kg Mortar fuse with a rotatable fan
FR2926631A1 (en) * 2008-01-18 2009-07-24 Livbag Soc Par Actions Simplif Electro-pyrotechnic igniter for e.g. airbag of automobile, has case containing leadless secondary charges with different apparent densities, where one of charges presenting high apparent density is placed in contact with base of case

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